Recording material and optical information recording medium
AssigneeFUJIFILM Corporation
InventorsHidehiro Mochizuki, Tetsuya Watanabe
Life of this patent
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Abstract
A recording material includes a dye-bonded polymer compound which contains a polymer compound to which a one-photon absorption dye is bonded, and a glass transition temperature of the recording material is higher than 200° C. An optical information recording medium includes a recording layer and an intermediate layer adjacent to the recording layer, and the recording layer contains the above-described recording material.
Claims9
An optical information recording medium comprising a recording layer and an intermediate layer adjacent to the recording layer,
- wherein:
- the recording layer comprises a recording material comprising a dye-bonded polymer compound which contains a polymer compound to which a one-photon absorption dye is bonded,
- the glass transition temperature of the recording material is higher than 200° C.,
- the recording layer is provided in a plurality of layers of the optical information recording medium, and the intermediate layer is provided between adjacent recording layers,
- each recording layer has a first interface and a second interface between the recording layer and two intermediate layers sandwiching the recording layer,
- at least one of the first and second interfaces is configured to have a protrusion formed by irradiation with a recording beam, the protrusion sticking out into an intermediate layer corresponding to the at least one of the first and second interfaces, and
- the one-photon absorption dye is selected from the group consisting of 1-aminobutadiene derivatives, benzotriazole derivatives and acridone derivatives, which are represented by the following chemical structural formulae:
An optical information recording medium comprising a recording layer and an intermediate layer adjacent to the recording layer,
- wherein:
- the recording layer comprises a recording material comprising a dye-bonded polymer compound which contains a polymer compound to which a one-photon absorption dye is bonded,
- the glass transition temperature of the recording material is higher than 200° C.,
- the recording layer is provided in a plurality of layers of the optical information recording medium, and the intermediate layer is provided between adjacent recording layers,
- each recording layer has a first interface and a second interface between the recording layer and two intermediate layers sandwiching the recording layer,
- at least one of the first and second interfaces is configured to have a protrusion formed by irradiation with a recording beam, the protrusion sticking out into an intermediate layer corresponding to the at least one of the first and second interfaces,
- the protrusion is formed in one of the first interface and the second interface by irradiation with the recording beam, and the protrusion is not formed in the other one of the first interface and the second interface,
- the difference between refractive indices of the intermediate layer and the recording layer is greater at the interface in which the protrusions is formed than at the interface in which the protrusion is not formed, and
- the one-photon absorption dye is selected from the group consisting of 1-aminobutadiene derivatives, benzotriazole derivatives and acridone derivatives, which are represented by the following chemical structural formulae:
Dependencies are inferred from the claim text.